Gradistat V 91 Free < Best Pick >
You can input data in multiple formats:
If you want, I can draft a short methods paragraph formatted for a manuscript stating exactly how to report analyses done with Gradistat v91 (including example phrasing and citation).
GRADISTAT is a Microsoft Excel-based program used for the rapid analysis of grain size statistics, specifically designed for unconsolidated sediments
. Developed by Simon Blott and Kenneth Pye, it processes data from sieving, laser granulometry, and other standard measuring techniques. Kenneth Pye Associates Ltd Accessing the Software
The software is generally available for free through academic and institutional repositories. Official Source Kenneth Pye Associates Ltd website provides links to the software. Version Compatibility Original Versions : Built for Excel 1997 and 2000. Version 8.0 : Compatible with Excel 2000 through 2010 (available in GRADISTAT-PRO
: A fully revised version with more functionality is currently under development as of 2024. Kenneth Pye Associates Ltd Key Features Rapid Calculation : Can process approximately 50 samples per hour. Statistical Outputs : Calculates mean, mode, sorting, and skewness using both Folk and Ward (1957) method of moments calculations. Graphical Outputs
: Generates frequency plots, cumulative distribution curves, and ternary plots (e.g., Gravel-Sand-Mud or Sand-Silt-Clay).
: Supports calculations in metric units (microns) and logarithmic Michigan Technological University How to Use GRADISTAT
The program utilizes Excel macros to perform its functions. Follow these general steps based on official user instructions Prepare the Data : Navigate to the "Multiple Sample Data Input" sheet. Define Size Classes
: Enter the aperture sizes of your sieves or laser granulometer bins in
. You can use the program's built-in standard intervals for convenience. Input Sample Weights : Enter the weight or percentage of the sample in and subsequent columns for additional samples.
: Fill in the green cells with sample identity, analyst name, and date. Run Analysis : Click the "Calculate Statistics"
button. The process may take several minutes depending on the number of samples. Review Results
: Summary statistics for all samples are aggregated on the "Multiple Sample Statistics" sheet. ResearchGate generated in the results? GRADISTAT software - Kenneth Pye Associates Ltd gradistat v 91 free
1 software. Subject: Looking for GRADISTAT v9.1? Download the Latest Free Version for Grain Size Analysis Hi everyone,
For those of you working in sedimentology, geology, or environmental science, you’re likely familiar with GRADISTAT—the go-to Microsoft Excel-based program for rapid grain size statistics analysis.
I’m sharing a quick update that GRADISTAT Version 9.1 is available as a free download. It remains one of the most efficient tools for calculating standard statistics (mean, sorting, skewness, kurtosis) using both the Method of Moments and the Folk and Ward graphical methods. Key Features of v9.1:
Automated Statistics: Instant calculation of grain size parameters.
Physical Descriptions: Automatically provides sediment descriptions (e.g., "Fine Sand," "Sandy Gravel") based on the Udden-Wentworth scale.
Custom Graphics: Generates high-quality cumulative distribution curves and histograms directly within Excel.
Compatibility: Optimized for newer versions of Microsoft Excel while maintaining the classic, user-friendly interface. How to Get It:
GRADISTAT was originally developed by Simon Blott. You can download the latest version for free from various academic and research repositories, most notably:
K Pye Associates Downloads (The official source for the latest updates and documentation).
Installation Tip: Since GRADISTAT runs on Excel macros, make sure to "Enable Content" or "Enable Macros" when you first open the .xlsm file, otherwise the calculation buttons won't trigger.
Does anyone have experience using v9.1 compared to older versions like v8? I’ve noticed the plotting is a bit smoother in the latest update. Happy sampling!
The primary article covering is the original 2001 publication by Simon J. Blott and Kenneth Pye, titled
"GRADISTAT: A grain size distribution and statistics package for the analysis of unconsolidated sediments" in the journal Earth Surface Processes and Landforms Kenneth Pye Associates Ltd Key Insights into GRADISTAT v9.1 You can input data in multiple formats: If
GRADISTAT is a widely used Excel-based macro program for geomorphologists and sedimentologists to rapidly calculate grain size statistics. Kenneth Pye Associates Ltd Functionality
: It calculates mean, mode, sorting, and skewness using both moment methods Folk and Ward (1957) graphical methods. Data Compatibility
: The software accepts data from standard measuring techniques like sieving and laser granulometry.
: It generates a range of graphical outputs, including frequency plots and ternary diagrams (e.g., sand-silt-clay ratios).
: It is built as a Microsoft Excel spreadsheet (utilizing Visual Basic), which makes it highly versatile and familiar for researchers. Kenneth Pye Associates Ltd Availability and Versioning
is frequently cited in recent research papers as the version used for sediment analysis, official distribution often focuses on specific legacy or professional versions. Kenneth Pye Associates Ltd Free Access
: Users typically find older versions (like v4.0 or v8.0) available for free download via the Kenneth Pye Associates Ltd software page or the original ESPL journal website Current Development : A fully revised, more functional version known as GRADISTAT-PRO is currently under development by the original authors. Alternative Versions
: Researchers sometimes host specific versions on platforms like ResearchGate for academic use. Kenneth Pye Associates Ltd or a tutorial for the Excel interface? GRADISTAT software - Kenneth Pye Associates Ltd
Analysis of GRADISTAT v. 9.1: A Standard in Sedimentological Computing
GRADISTAT is a widely utilized grain size distribution and statistics software package specifically designed for the analysis of unconsolidated sediments. Originally developed by Dr. Simon J. Blott and published in 2001 alongside Kenneth Pye, the program has become a cornerstone tool for researchers in geomorphology and sedimentology due to its accessibility and comprehensive analytical capabilities. 1. Software Overview and Architecture
Unlike standalone specialized software, GRADISTAT is built as a Microsoft Excel macro, which allows for a high degree of versatility and ease of use within a familiar spreadsheet environment. It is designed to handle data from various measuring techniques, including: Sieve Analysis: Manual weighing of sediment fractions. Laser Granulometry: Modern light diffraction methods.
Other Methods: Including X-ray sedigraph and Coulter counters.
The program enables the rapid processing of samples—averaging approximately 50 samples per hour—calculating complex statistics that would otherwise be laborious to perform manually. 2. Key Statistical Capabilities If you need a pure free experience but
GRADISTAT provides a robust suite of statistical measures calculated through multiple methodologies:
Methods of Calculation: It supports both the Method of Moments (arithmetic and geometric) and the Folk and Ward (1957) graphical methods.
Output Parameters: The software calculates essential descriptors such as mean, mode, sorting (standard deviation), skewness, and kurtosis.
Scaling: Results are provided in both metric units (micrometers) and logarithmic phi units.
Classification: It automatically assigns descriptive terms based on calculated statistics, such as sediment names following the Folk (1954) classification system. 3. Visual and Graphical Output
A primary advantage of GRADISTAT is its ability to generate professional-grade graphical outputs directly within Excel. Users can produce: GRADISTAT software - Kenneth Pye Associates Ltd
Here are a few options for a post about Gradistat v9.1 Free, tailored to different platforms.
Since Gradistat is popular among geologists and sedimentologists for grain size analysis, these posts use relevant hashtags and terminology.
When you open the file, you will see several worksheets:
Because the original v 9.1 is no longer supported, the geoscience community has created "forks" and improvements:
If you need a pure free experience but want modern stability, the Gradistat 9.1 macro can still be copied to a new .xlsm file – an advanced but doable project.
Fix: Unblock the file before opening: Right-click the .xls file → Properties → Check "Unblock" → Apply. Then open Excel and enable macros.
